| 摘要 |
PURPOSE:To perform data communication through a telephone line and confirm transmission data and leave it as a slip, by using the telephone set which has been already installed, in the terminal equipment for data communication utilizing the telephone line. CONSTITUTION:For the purpose of connecting terminal equipments 1 and 2, telephone set 3B or 3A is called from telephone set 3A or 3B, and transmitter and receivers 4A and 4B are set to respective I/O parts. Under this state, information of card reader 5, input device 11, and so on is input to controlling unit 7 and is output through modulator 8, amplifier 9, and speaker 10. Then, the signal inssued from speaker 10 passes through transmitter and receiver 4A and reaches receiving part R of transmitter and receiver 4B in the receiving side through telephone line TL. This transmitted dial tone is detected by microphone 12 is and is amplifier in 13, and after that, it is sent to demeodulator 14 to perform the signal processing in controlling unit 7, and processings such as output to printer 15 are performed. |
